HAL526SF-K Equivalent & Substitute Parts

Part Overview

The HAL526SF-K is a digital switch latch Hall Effect magnetic sensor manufactured by TDK-Micronas GmbH, designed for applications requiring magnetic field detection with latch functionality. This component operates as an open drain output device in a surface mount SOT-89B-1 package. The product is currently obsolete, making identification of compatible substitute components essential for ongoing system support, design updates, and procurement continuity.

Substiute Parts

HAL526SF-K

TDK-Micronas GmbHIn Stock: 1041HAL526SF-K Datasheet

Current PartRFQ

SS566AT

Honeywell Sensing and Productivity SolutionsIn Stock: 5296SS566AT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HAL526SF-K is determined by the following critical parameters:

• Function & Technology: Latch-type Hall Effect magnetic sensor
• Polarization: South Pole detection
• Sensing Range: Magnetic trip and release thresholds (17mT nominal)
• Output Configuration: Open Drain topology
• Supply Voltage Range: Minimum 3.8V operation, maximum 24V tolerance
• Output Current Capability: 20mA maximum
• Package Form Factor: SOT-89B surface mount variant
• Temperature Operating Range: -40°C to 140°C
• Compliance: RoHS Compliant

The SS566AT from Honeywell Sensing and Productivity Solutions qualifies as a substitute based on matching functional requirements, package compatibility, and electrical parameter overlap within acceptable engineering tolerances.

Parameter Comparison

Engineering Selection Recommendations

The SS566AT is the manufacturer-recommended substitute for the obsolete HAL526SF-K. Both components maintain RoHS compliance and are certified to equivalent regulatory standards (ECCN: EAR99, HTSUS: 8542.39.0001).

The SS566AT offers enhanced specifications across multiple parameters: extended supply voltage tolerance (30V maximum versus 24V), higher output current capability (50mA versus 20mA), and extended operating temperature range (150°C versus 140°C). These improvements provide design margin and do not introduce incompatibility with existing HAL526SF-K circuit implementations.

The sensing range variance (18mT versus 17mT) represents a 5.9% difference in trip threshold. For applications with critical magnetic field sensitivity requirements, this variance must be evaluated against system tolerance specifications.

The output topology transition from open drain to open collector is functionally equivalent in standard pull-up resistor configurations and does not require circuit redesign for typical applications.

Frequently Asked Questions (FAQ)

Q: Can SS566AT directly replace HAL526SF-K without circuit modification?

A: Yes, for standard applications. Both components share identical latch function, Hall Effect technology, south pole polarization, surface mount SOT-89B package, and RoHS compliance. The open drain to open collector output transition is functionally equivalent in typical pull-up resistor circuits. Verify sensing range tolerance (1mT variance) and supply current budget (SS566AT: 10mA maximum versus HAL526SF-K: 5.2mA maximum) for your specific application.

Q: What is the significance of the 1mT difference in sensing range?

A: The HAL526SF-K operates at 17mT trip and -17mT release thresholds, while the SS566AT operates at 18mT trip and -18mT release thresholds. This represents approximately 5.9% variance. For applications with tight magnetic field tolerance specifications, validate that system performance remains acceptable within this range. For most general-purpose latch applications, this variance is within acceptable engineering tolerance.

Q: Are there supply voltage compatibility concerns?

A: The HAL526SF-K operates from 3.8V to 24V. The SS566AT operates from 3.8V to 30V. The SS566AT's extended upper voltage range does not create incompatibility; it provides additional design margin. If your circuit operates within the 3.8V to 24V window, both components are compatible. The SS566AT's higher maximum supply current (10mA versus 5.2mA) requires verification that your power supply can accommodate the increased draw.

Q: Is the output current increase from 20mA to 50mA a concern?

A: No. The SS566AT's higher output current capability (50mA maximum versus 20mA maximum) is a specification enhancement. It does not require circuit modification and provides additional design margin for load driving capability. Existing circuits designed for 20mA output will operate correctly with the SS566AT.

Q: Are there packaging or pinout differences?

A: No. Both components use the TO-243AA variant surface mount package in SOT-89B form factor. Pinout is identical, enabling direct PCB footprint compatibility without layout modification.

Q: What compliance certifications apply to both components?

A: Both HAL526SF-K and SS566AT are RoHS Compliant, carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, and meet equivalent regulatory standards for magnetic sensor components.